标准制动软管

• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 993 (911) C2 1994-97
• Porsche 993 (911) C4 1994-97
• Porsche 993 (911) RS 1994-97
• Porsche 993 (911) TURBO 1994-96  

Why these should be replaced:

Flexible rubber brake hoses age with heat, road grime and brake fluid exposure — they can dry-rot, crack, bulge or leak, creating an immediate safety hazard. Even without visible leaks, inner-liner deterioration or partial collapse can cause a soft/spongy pedal and uneven braking. Replacing old hoses with correct-fit OE hoses restores reliable pedal feel and prevents catastrophic fluid loss.

Common issues & failure modes:

• External cracking / dry rot from UV, heat and age — visible on inspection.
• Fluid leaks at hose body or end fittings due to perished rubber or corroded threads.
• Internal liner collapse (not visible) — causes restricted flow, delayed pressure build and a soft brake pedal.
• Mounting damage / chafing where the hose rubs against suspension parts — can wear through the outer cover and cause sudden failure. The OEM-style support/grommet helps prevent this. 

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Diagram ref no 1

• 保时捷 993（911）C2 1995-97
• 保时捷 993（911）C4 1995-97
• 保时捷993（911）RS 1995-97
• 保时捷 993 (911) 涡轮 1995-96

为什么要替换这些：

柔性橡胶制动软管会因高温、路面污垢和制动液的侵蚀而老化，从而导致干腐、破裂、膨胀或泄漏，造成直接的安全隐患。即使没有明显的泄漏，内衬老化或部分塌陷也会导致踏板软化/松软以及制动不均匀。将旧软管更换为合适的原厂软管，可以恢复可靠的踏板踩感，并防止严重的制动液损失。

常见问题和故障模式：

• 因紫外线、热量和老化而导致的外部开裂/干腐——检查时可见。
• 由于橡胶损坏或螺纹腐蚀，导致软管主体或端部接头处出现流体泄漏。
• 内部衬管塌陷（不可见）——导致流量受限、压力建立延迟和制动踏板柔软。
• 软管与悬架部件摩擦造成的安装损坏/磨损可能会磨损外壳，导致突然故障。OEM 式支架/索环有助于防止这种情况发生。
  
  

图表参考编号 1 和 16